caericaburu



(No Model.) 2 Sheets-Sheet 1.

L. B. OARRIOABURU.

STEAM ENGINE. No. 821,084. Patented June 30, 1885.

N, PETERS. PhuluLlthagnpMn Wuhlllgiun. D.C.

(No Model.) 2 Sheets-Sheet 2.

L. B. OARRIGABURU.

STEAM'ENGINBL No. 321,084. Patented June 30, 1885.

n, PETERSV Phcl'wLilMmph-r, Wuhinglnn. 0,1;

FFIQE-Q ATENT LEON B. CARRICABURU, OF NEW YORK, N. Y.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 321,084, dated June 30,1885.

Application filed July 5, 1884. (No model.)

To all whom it may concern:

Be it known that I, LEON B. CARRICABURU, of the city and State of NewYork, have invented an Improvement in Steam-Engines, of which thefollowing is a specification.

This invention relates to that class of engines in which one engineregulates the action of the other engine. Heretoforein direct-actingpumping-engines the movement of thepiston-rod of one engine-cylinder hasacted to give motion to the valve of the second cylinder, and the pistonof the first cylinder has remained stationary until its valve has beenmoved by the tappets and piston-rod of the second cylinder, and so on;This, however, is detrimental, as there is but one piston in operationat a time, the one piston remaining quiescent during the stroke of theother piston. In myimprovement the valve is moved by valve-movingpistons, which are actuated by steam admitted by the main piston of theadjacent engine when passing holes or openings in the side of thesteam-cylinder. These holes or ports will usually be near the middle ofthe engine-cylinder, so that the piston of one engine will reach the endof its stroke at or about the same time as the piston of the otherengine passes the middle of its stroke, and admits steam to move thevalve of the first-named engine and cause the piston thereof to move inthe other direction.

In the drawings, Figure l is a section of the engine and valvemovingpistons. Fig. 2 is a plan illustrating the connections between threesteam-cylinders, and Fig. 3 is a cross section showing the automaticvalve in the steamway.

The steam-cylinders A B G and their pistonrods A B O and pistons a b 0may be of any desired size or construction. Usually the piston'rodswillbe extended to and act upon pistons in other cylinders, formingpumps; but

attained by the use of the two pairs of ports 4 5 and 6 7 is that thevalve covering the port4 or 6 as the piston bis moving toward thatportthe other port, 5 or 6, is the only exhaust, and hence the vapors at theexhaust side of the piston are confined after the piston haspassed theport 5 or 6 to form a cushion and prevent the piston striking againstthe cylindenhead. This feature of the two pairs of ports and the valveis shown in my application, Serial No. 118,152, filed January 21, 1884,and need not be further described.

I remark that my present invention is not limited to any particularvalve or ports, and may be used with single ports to the respective endsof the cylinder, and with the Ordinary D or B slide-valve, or with anyother or known steam-engine valve that is capable of receiving motionfrom the valve-moving pistons. The engine-cylinder A is connected to thevalvemoving cylinders H H, respectively, by the pipes N N, in whichthere are cocks 10 and 11. The ends of the pipes at the cylinders H Hpreferably open into holes made below the valve-seat, and provided withports leading up into the respective cylinders. This avoids any directconnection to the cylinders H H, and allows for their removal from thevalveseat, when necessary, without dis urbing the pipes N N. At thecylinder A these pipes N N open by ports or holes through the cylinderitself, preferably at one side thereof, as shown by dotted lines in Fig.2. The valve of the engine A may be moved by any desired mechanism. Ihave shown the rocker 7c and tappet i to act upon the valve-rod h, as inmy application, Serial No. 118,151, filed January 21, 1884, and allowedApril 22, 1884. When the piston of the cylinder A is moving in thedirection indicated by the arrow, the ends of N N, opening into thecylinder A, are both at the exhaust side of said piston, and as thepiston passes along it covers the ends of both pipes N N; but the momentthe end of N is uncovered the steam under pressure rushes by N into H,and moves the pistons G G and valve F, admitting steam by the port 4,and opening the exhaust-port 6. While this movement is taking place theend of the pipe N is covered by the piston, and the vapors in H ICO tonsor valve in engine B until the piston in the cylinder A acts to coverand uncover the ends of the pipes N N 2 in the reverse order to thatbefore described, because the ends of N N being open in the cylinder A,the rise and fall of pressure or exhaust will act at opposite ends ofthe pistons H H equally, and the pistons and valve will remainstationary until the live steam is allowed to enter from thesteam-cylinder A and upon either the piston H or the piston H.

-I have shown the three cylinders A B (J. The cylinder may be providedwith the rocker is, for moving the valve in first one direction and thenthe other, the same as set forth in my aforesaid application No.118,151, filed January 21, 1884, and by providing pipes N N between thecylinder (J and the valvemoving pistons of the cylinder B, and cocks l2and 13, the valve-moving devices of the engine B may be supplied withsteam from the cylinder of 0, instead of from the cylinder A, it beingunderstood that when the valves and 11 are open the valves 12 and 13 areto be shut, and vice versa.

If there is anything out of repair in the engine with the cylinder B,that may be isolated by closing the cooks 10 and 11, the cooks 12 and 13also being closed, the engines 0 and A working independently; or theengine B can be controlled by steam admitted to its valvemoving devicesby the piston of either the cylinder A or the cylinder G, thereby stopping only the engine which is out of order or is not desired torun,while in the duplex engine in use at present if one piston has tostop both have to stop. Usually, the cylinders A B G will be as closetogether as consistent with the introduction of the pipes and cooks.

In the drawings the cylinders are spread apart to illustrate theconnections more clearly. If desired, the pipes N N or N N,coming infrom opposite sides into the metal below the valve-seat, may be in linewith each other, as shown in Fig. 3, and provided with a sliding valve,12, between seats at the ends of the respective pipes, so that whensteam is shut off irom the cylinder A the pressure of steam from thecylinder 0 may throw the valves 0 over against the seats at the ends ofthe pipes N N closing the same,- and when steam is shut off from thecylinder 0 and the steam adrnitted to the cylinder A the pressure may1hrow such valves 19 over upon the seats at ;he ends of the pipes N N,closing the same. lhe valves 1) may be double, there being two )11 eachstem, or the valves may be globular, o as to be rolled along by thepressure in the )orts or passage-ways occupied by them. these "alves 1)allow for the central engine beng placed under control of either engineA or 3 by simply turning the steam on to start said ngine A or B.

1 do not claim duplex engines in which the team passes from the cylinderof the first enine to move the valve of the second engine,

' m-mun.

and in which steam from the second enginecylinder passes to and movesthe valve of the first engine. Neither do I claim two engines, eitherone of which can be operated independently of the other, and in whichcocks are employed to the steam passage-ways, so that steam from thecylinder of one engine can be admitted to operate the valve of the otherengine, the operation being reciprocal. In my improvements the engine Bis entirely dependent upon the engine A or the engine 0, and this engineBperforms no duty for either of the other engines. I am therefore ableto greatly simplify the construction and lessen the expense, and eitherengine A or 0 can be run alone; or they can both be operated at the sametime, and the engineB can either be out of action or be controlled inits action by either the engine A or the engine 0.

I claim as my invcntionl. The combination, with a steamengine having acylinder, piston, valve, and mechanism for moving the valve, of a secondsteamengine, cylinder, piston, valve, and cylinders and pistons to movethe steam-valve, and steam pipes or passages leading from the cylinderof the first engineto the cylinders and valve moving pistons of thesecond engine, whereby the first-named engine is entirely independentofthe second engine, and the second engine is entirely dependent uponthe first engine for the steam that moves its valve, substantially asspecified.

2. The combination, with two steamc11- gines, A 0, having independentvalve-moving mechanism, of an intermediate steam-engine, B, havingvalve-moving pistons and cylinders,connecting steam-pipes from saidcylinders of the valve-movingpistons to the steamcylinders of theengines A O, and automatic valves in the steam passage-way of the engineB, substantially as specified.

3. The combination, with two steam engines, A 0, having independentvalve-moving mechanism, of an intermediate steam-engine, B, havingvalve-moving pistons and cylinders, connecting steam-pipes from saidcylinders of the valve-moving pistons to the steamcylinders of theengines A C, and cooks or galives in the said pipes, substantially asspeci- 4. The combination of three steam-engines, A B 0, each havingacylinder, piston, pistonrod, and valve, with the connecting devices,substantially as set forth, whereby the valve of the engine B isdependent forits movement upon one of either the other two engines, andone or two of the engines can be stopped without interfering with theother engine or engines, substantially as specified.

Signed by me this 27th day of June, A D.

L. B. CARRIOABURU. \Vitnesses:

Gno. T. PINOKNEY, WILLIAM G. Mom.

